Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b64982435b082a0c9b741d568395b84b5092a11199b2084e2b85aa6c45e113c' 
  AND token = 'q/0Ec+L3M3pkg8t7xvXnllOPZFo9mrTwsf4en/r99cI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}